There is currently a 50% flash sale so you have chosen a good time to post!
http://offers.disneylandparis.co.uk...L1&camid=Emailing&mauid=1203OUVFNO50GBBSEEM05
all of the details for the sale are on there.
If you are on a budget I would recommend staying at either the
Santa Fe or
Cheyenne hotels as these are the most basic accommodation at Disney Land Paris (but this does not mean that they are sub-standard! I have stayed in Santa Fe and it was perfect for what we needed: somewhere to sleep and have breakfast.) The hotels on-site are within walking distance to the parks though there is a free shuttle.
OR you could
drive all the way to Disney using the ferry from Dover to Calais and stay at
Davy Crockett. Here, you stay in a chalet-like-affair and drive to the parks each day. At all Disney hotels, breakfast is included in the price.
Alternatively there are
off-site hotels that are cheaper than on-site. I believe that a shuttle runs from these, too. They can be found on the Disney website.
http://www.disneylandparis.co.uk/
However, rather than driving, unarguably the easiest way to travel is via
Eurostar. This leaves from St Pancras intl. daily (apart from Saturdays I think) and as you live in Birmingham I expect that you could perhaps take a train to London first? The Eurostar takes you directly in to Marne La Valle which is in Disney Land itself! You can also
fly (we went from Luton to Charles de Gaulle) and then get the Disney bus to the parks.
I find it best to just play around on the Disney site with different bookings/travel options etc, make a note of these, then decide which is the best option.
I am in no way an expert and so hopefully this all makes sense, I haven't waffled, and it's helpful! Please ask me to clarify anything if you are unsure!